Swivel.



S. -T. STURDIVANT.

SWIVEL.

APPLICATION FILED MAY 11, I914.

1,177,21 5. Patented Mar. 28, 1916.

THE COLUMBIA PMNOORAPH ,CO.. WASHINGTON. D, c.

Parana SAMUEL T. STURDIVANT, OF VINTON, LOUISIANA.

SWIVEL.

Application filed May 11, 1914. Serial No. 837,824.

To all whom it may concern:

Be it known that I, SAMUEL T. S'rUnnI- VANT, a citizen of the United States, residing at V into-n, in the parish of Galcasieu, State of Louisiana, have invented certain new and useful Improvements in Swivels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a ball bearing 3 link. a I

An object of the invention is to provide a device which may be attached to. a travel ing block of a crane so as to prevent the supporting wires from twisting. It is to be understood, however, that although the device is particularly useful in this connection it may be used in various other places successfully.

'A further object of the invention is to provide a device which is of such shape as to facilitatethe placing a load thereon.

With these and other objects in view, such as will appear as the description progresses,

my invention comprises the combination andarrangement of parts as herein set forth and subsequently claimed.

Referring to the drawing: Figure 1 is a side elevation of my device. Fig. 2 is a longitudinal sectional view thereof.

Referring to the drawing by reference characters wherein like characters represent like parts throughout the several views: My device comprises a 6 link 1 having a pivoted closure 2, the downwardly extending free end of this link is inclined from its outer edge downwardly to its inner edge, as at 3, while the upwardly extending free end is upwardly inclined outwardly, as at 4, and these ends are spaced from each other, thus forming a resultant angular opening.

Extending from the upper portion of the link 1 is a shank'o having left hand threads 6 on the upper end thereof and an aperture 7 passing transversely therethrough.

Resting on the upper end of the C link and loosely mounted on the shank-5 at the lower end thereof is a washer 8 and on this washer and rotatably mounted on the shank 5 is a ball-bearing cup 9 having a groove 10 Specification of Letters Patent.

Patented Mar. 28, 191%..

in its upper face. In this are located a series of ball-bearings 11 and resting on these bearings and encircling the shank 5 is a second cup member 12 having a groove 13 in its lower face. Resting on this cup member is a Washer 14 and on the washer 14: is a collar 15 having outwardly extending trunnions 1.6 and a hole 15 through which oil'may be supplied onto the shank 5.

Screwed down upon the upper end of the shank 5 are nuts 17 which are held thereon against accidental disengagement therefrom by the cotter pin 18 which passes through the aperture 7 of the upper end of the shank 5.

Pivotally mounted on the trunnions 16 is a shackle member 19 which is held thereon by the washers 20 and the bolts 21 which engage threaded apertures 22 in the ends of the trunnions.

It may be thus seen that I have provided a device which will have movement around a horizontal pivot and also movement around a vertical pivot.

By screwing the nuts 17 down upon the upper end of the shank 5 the friction be tween the ball-bearings and the adjacent cups may be either increased or decreased as desired, and in fact the cups may be separated so that new ball-bearings may be placed therein.

By attaching this device to the traveling block of a crane and supporting the load therefrom all possibility of twisting of the operating cables, through a corresponding movement of the load, is obviated, this by -reason of the swivel connection of the links through which the load is applied to the block.

. By forming the entrance to the (3 link in the particular way described, the insertion of a member into the said link is facilitated and also the lifting of it therefrom.

It may be seen that I have provided a device which is exceedingly simple in construction and inexpensive, yet one which will completely do away with the possibility of cables to which it is attached twisting.

Z'Vhat is claimed is In a device of the class described, the combination with a link having a shank extending upwardly therefrom, of a collar rotatably mounted on said shank and having outwardly extending trunnions, a shackle pivotally mounted on said trunnions, bear- In testimony whereof, I affix my signaing cups mounted on the shank between the ture, in the presence of two Witnesses.

link and the cellar and ball bearin 's disposed between said cups, the collar having SAMUEL STURDIVANT' 5 an oil receiving opening therein through Witnesses:

which 011 may be inserted which 011 will flow PATRICK DONOVAN, by gravlty t0 the ball bearings. v V. W. STANDFIELD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

